Re: [PATCH] i2c: Use IS_REACHABLE() for substituting empty ACPI functions
From: Takashi Iwai
Date: Wed Aug 14 2024 - 09:42:59 EST
On Wed, 14 Aug 2024 14:16:49 +0200,
Richard Fitzgerald wrote:
>
> Replace IS_ENABLED() with IS_REACHABLE() to substitute empty stubs for:
> i2c_acpi_get_i2c_resource()
> i2c_acpi_client_count()
> i2c_acpi_find_bus_speed()
> i2c_acpi_new_device_by_fwnode()
> i2c_adapter *i2c_acpi_find_adapter_by_handle()
> i2c_acpi_waive_d0_probe()
>
> commit f17c06c6608a ("i2c: Fix conditional for substituting empty ACPI
> functions") partially fixed this conditional to depend on CONFIG_I2C,
> but used IS_ENABLED(), which is wrong since CONFIG_I2C is tristate.
>
> CONFIG_ACPI is boolean but let's also change it to use IS_REACHABLE()
> to future-proof it against becoming tristate.
>
> Somehow despite testing various combinations of CONFIG_I2C and CONFIG_ACPI
> we missed the combination CONFIG_I2C=m, CONFIG_ACPI=y.
>
> Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
> Fixes: f17c06c6608a ("i2c: Fix conditional for substituting empty ACPI functions")
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Closes: https://lore.kernel.org/oe-kbuild-all/202408141333.gYnaitcV-lkp@xxxxxxxxx/
I suppose Wolfram will take this?
Reviewed-by: Takashi Iwai <tiwai@xxxxxxx>
thanks,
Takashi